244 



the coal bed, as it appears in the face of the cliff; the sixth co- 

 lumn shows the distance in adits or pits, from the entrance to the 

 coal bed. 







° ti 





ZD <M 





u 



2 







t we; 

 cry. 



c3 ° 

 a ° 





Name of 



'S3 ° ea 

 & & £ 







Coal was reached by Adit, or 



Numl 



Colliery. 



Average 

 Outcro 

 above ! 



Coal th] 

 or dowi 

 side frc 

 cent Cc 



Dip, as i 

 in the 

 the Clif 



by Pit, and distance to it. 







Feet. 



Feet. 





Near Bath Lodge, 5 

 pits, worked from 1749 



1 



Saltpans, . . 





? 



W. 10° 



! to 1760; 45 yards to 

 | coal, which was 6 to 













9 feet thick, under sea 

 ^ level. 













2 



White mine 



165 



? 



W. 10° 



A Hit 9ft \TQrrla in nr\^ 

 axuil z< 0 Veil Ho LU lUdl. 



Q 

 O 



Falbane, . . 



180 



Down 10 



W. 10" 



j Adit 160 yards to coal, 

 ( 41 feet. 



4 



North Star, . . 





Anticlinal 



( W. 10° 



| Adit 256 yards in ; 







\ E. 12° 



( working in 1787. 



5 



Westmine, . . 



100 



Up 20 



E. 10° 



| .Adit 600 yards into the 

 \ coal. 



6 



Lackglass, . . 



200 



Up 165 



E. 20° 



Old Adit 600 yards in. 

 f Adit 180 yards in ; 



7 



Goldnumuck, 



170 



Up 5 



E. 20° 



j upper muck xit, 







\ yards ; Lower Muck 

 L Pit, 50 yards. 



8 



Pollard, . . 



265 



Up 155 



E. 20° 



f Adit 546 yards in ; to 

 \ the coal pit 47^ yards. 







9 



Griffin, 



152 



Down 10 



E. 20° 



Adit, 700 yards to coal. 











j E. 20° j 



10 



Gobb, 



180 



Up 110 



I SynclinalJ 



Adit, 400 yards in. 











( W. 15° ) 



11 



Portnagree, 



200 



Down 90 



p 





Table of the Strata, at Gobb Mine, from the top downwards. 



ft. in. 



1. Trap imperfectly columnar, 510 



2. Shale, . . ! 18 0 



3. Yellowish white sandstone, 42 0 



4. Black shale, with thin seams of coal, 15 0 



5. Hard gray, and yellowish white sandstone, 81 0 



6. Main bed of coal, 4 0 



7. Shale with thin beds of fireclay, 20 



8. Impure coal, 2 0 



9. Black shale, . 16 0 



Carried forward, . .231 0 



